package soen6441;

import java.util.Collection;
import java.util.Collections;
import java.util.Map;
import java.util.Set;

class NullObjects {
    public static void main(String[] args) {
        // empty string
        String nullString = "";

        // empty collections
        Collection<Integer> nullCollection = Collections.emptyList();
        Map<String, String> nullMap = Collections.emptyMap();
        Set<String> nullSet = Collections.emptySet();

        // empty array
        int[] ints = new int[0];
    }
}
